Is there anyway to enable AA in PSU?

Hello,
I started playing Phantasy Star Universe the day it came out, and the only thing that bothers me is that I can't use AA, and since I am using a LCD, my resolution can't go very high. I have tried forcing through Ati Tray Tools, but that doesn't work. Does anyone know of a way to get it to work with this game?
Thanks

Nope, forcing in catalyst does nothing as well.

Well, I actually reinstalled my drivers totally, because I was using an older set at the time. I uninstalled ATT as well, as well as using driver cleaner pro, then installed 6.9 with CCC. I'm not sure if its the drivers or the game, but if someone has gotten it to work and knows whats wrong with it that would be great. I vaguely remember someone saying once that AA could not be turned on in FFXI, so I wonder if it's just something with ported PS2 games.